Low Pressure Gauge, Accuracy +/-2.5 Percent, Gauge Case Material Steel, Nominal Dial Size 2 1/2 in, Lens Material Polycarbonate, IP/NEMA Rating Not Rated, Hazardous Location Rating Not Rated, Sensor Material Copper Alloy, Socket Material Copper Alloy HPb59-1, Sensor Type Diaphragm, Process Connection Type NPT, Process Connection Gender Male, Process Connection Location Center Back, Process Connection Size 1/4 in, Panel-Mountable No, Pressure Gauge Type Low Pressure Gauge WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. - Lead